Creation and measurement of long-lived magnetic monopole currents in spin ice

@inproceedings{Giblin2011CreationAM,
  title={Creation and measurement of long-lived magnetic monopole currents in spin ice},
  author={S. Giblin and S. Bramwell and Peter C. W. Holdsworth and Dharmalingam Prabhakaran and Ian Michael Terry},
  year={2011}
}
The recent discovery of ‘magnetricity’ in spin ice raises the question of whether long-lived currents of magnetic ‘monopoles’ can be created and manipulated by applying magnetic fields. Here we show that they can. By applying a magnetic-field pulse to a Dy2Ti2O7 spin-ice crystal at 0.36 K, we create a relaxing magnetic current that lasts for several minutes. We measure the current by means of the electromotive force it induces in a solenoid coupled to a sensitive amplifier, and quantitatively… CONTINUE READING
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